We must look at Vedanta as Inner Science technology, not just merely a conceptual intellectual tradition of ancient India, as it common taught and perceived in the West. This technology is a means of leading us in a scientific manner beyond the trappings of the mind to a higher truth that is not bound by the material limits of the Universe; time, space, and causation.
India has had access to this technology for thousands of years, as it was the basis of training for great minds like Krishna, Shankara, and Swami Vivekandanda. Unfortunately, this inner technology is being laid aside in favor of Western thought, which is focused outward, towards sociopolitical views of life that does not look at the nature of consciousness. If, instead, Vedanta was more commonly utilized, India would have a more mature outlook on the thought process, leading to a consciousness-based means of solving spiritual and scientific problems in a much more integrated way.
The reason Vedanta has suffered in “popularity” in India is because of the colonization of the education system in the British Raj era, which denigrated and still continues to denigrate the native Indic education system, by making Vedanta appear to be otherworldly, world-negating, keeping India backwards. This is a result of the degeneration of the knowledge path. Let’s just use Shankara as an example.